NPCs shouldn't equip weapons prior to fighting

Alveleg does not have his shield equipped, as he did in vanilla.

http://www.uesp.net/wiki/Morrowind:Alveleg

(RM-1451 from redmine: created on 2014-06-09 by Lord Berandas, , closed on 2014-08-28 by scrawl ., relates #1609 (closed))